1. Which one describes not about a nuclear reaction but about a chemical reaction? Protons, neutrons, electrons,...

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Chemistry

1. Which one describes not about a nuclear reaction but about achemical reaction?
Protons, neutrons, electrons, and other elementary particles maybe involved.
Rates of reaction normally are not affected by temperature,pressure, and catalysts.
Only electrons in atomic or molecular orbitals are involved inthe breaking and forming of bonds.
Elements are converted from one to another.
2. If 12% of the original amount of a certain radioactiveisotope is left after 5.2 years of its radioactive decay, what isthe half-life of thisisotope?
28.1 years
14.05 years
1.699 years
7.025 years
3. Which statement is false?
No chemical treatments can make radioactive elementsharmless.Â Â Â
The rate of decay (disintegration) of U-238 is proportional toits sample size.Â Â Â
Changes in temperature or pressure cannot affect the rate ofdecay (disintegration) of radioactive elements.Â Â Â
Decay constant maintains its constancy only at the specifictemperature.

Answer & Explanation Solved by verified expert

3.6 Ratings (362 Votes)

1 Which one describes not about anuclear reaction but about a chemical reactiona Proton neutrons electron and other elementary particles maybe involvedVerdict This describes anuclear reactionReasonIn simple chemicalreactions the the subatomic nucleons like neutrons do notparticipate You need to provide a very high energy to take anucleon out from the nucleus as they are boung by strong nuclearforce and in simple chemical reaction that kind of external energyis not usedb Rate of reaction normally is nnot affected by temperaturepressure and catalystVerdict This also refers to thenuclear reactionReason Rate of a chemical reaction increaseswith See Answer

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